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    • 1. 发明申请
    • Controlling Inductive Power Transfer Systems
    • 控制感应电力传输系统
    • US20070228833A1
    • 2007-10-04
    • US11569035
    • 2005-05-11
    • Michael StevensAlexander KnillJohn DuntonAndrew DamesKevin Lamb
    • Michael StevensAlexander KnillJohn DuntonAndrew DamesKevin Lamb
    • H02J5/00
    • H02J50/80G05F1/66H01F38/14H02J5/005H02J17/00H02J50/10H02J50/12H02J50/60Y10T307/297Y10T307/406Y10T307/511
    • An inductive power transfer system comprises a primary unit 10, having a primary coil 12 and an electrical drive unit 14 which applies electrical drive signals to the primary coil so as to generate an electromagnetic field. The system also comprises at least one secondary device 30, separable from the primary unit and having a secondary coil 32 which couples with the field when the secondary device is in proximity to the primary unit. A control unit 16 causes a circuit including said primary coil to operate, during a measurement period, in an undriven resonating condition. In this condition the application of the drive signals to the primary coil by the electrical drive unit is suspended so that energy stored in the circuit decays over the course of the period. A decay measurement unit 18 takes one or more measures of such energy decay during the measurement period. In dependence upon said one or more energy decay measures, the control unit controls the electrical drive unit so as to restrict or stop inductive power transfer from the primary unit.
    • 感应电力传输系统包括主单元10,其具有初级线圈12和电驱动单元14,其将电驱动信号施加到初级线圈以便产生电磁场。 该系统还包括至少一个次级装置30,其可与主单元分离并且具有次级线圈32,当次级装置接近初级装置时,它与该场耦合。 控制单元16使得包括所述初级线圈的电路在测量周期期间在未驱动的谐振条件下操作。 在这种情况下,通过电驱动单元将驱动信号施加到初级线圈被暂停,使得存储在电路中的能量在该周期的过程中衰减。 衰减测量单元18在测量周期期间采取这种能量衰减的一个或多个措施。 根据所述一个或多个能量衰减措施,控制单元控制电驱动单元以限制或停止从主单元的感应功率传递。
    • 2. 发明申请
    • Controlling Inductive Power Transfer Systems
    • 控制感应电力传输系统
    • US20070216392A1
    • 2007-09-20
    • US11569029
    • 2005-05-11
    • Michael StevensAlexander KnillJohn Dunton
    • Michael StevensAlexander KnillJohn Dunton
    • H01F38/14
    • H02J50/12H02J5/005H02J7/025H02J17/00H02J50/10H02J50/40H02J50/60H02J50/80H04B5/0037Y10T307/297
    • An inductive power transfer system comprises a primary unit (10), having a primary coil (12) and an electrical drive unit (14) which applies electrical drive signals to the primary coil so as to generate an electromagnetic field. The system also comprises at least one secondary device (30), separable from the primary unit and having a secondary coil (32) which couples with the field when the secondary device is in proximity to the primary unit. A control unit (16) causes a circuit including said primary coil to operate, during a measurement period, in an undriven resonating condition. In this condition the application of the drive signals to the primary coil by the electrical drive unit is suspended so that energy stored in the circuit decays over the course of the period. A decay measurement unit (18) takes one or more measures of such energy decay during the measurement period. In dependence upon said one or more energy decay measures, the control unit controls the electrical drive unit so as to restrict or stop inductive power transfer from the primary unit.
    • 感应电力传输系统包括具有初级线圈(12)和电驱动单元(14)的初级单元(10),其将电驱动信号施加到初级线圈以便产生电磁场。 该系统还包括至少一个次级装置(30),其可与主单元分离并且具有次级线圈(32),当次级装置接近初级装置时,它与该场耦合。 控制单元(16)使得包括所述初级线圈的电路在测量周期期间处于未驱动的谐振状态。 在这种情况下,通过电驱动单元将驱动信号施加到初级线圈被暂停,使得存储在电路中的能量在该周期的过程中衰减。 衰减测量单元(18)在测量期间采取这种能量衰减的一个或多个措施。 根据所述一个或多个能量衰减措施,控制单元控制电驱动单元以限制或停止从主单元的感应功率传递。